The Smooth-On FMC 201 5 Gallon Kit is an essential tool for professionals and creators alike, offering a versatile and reliable polysulfide rubber mold compound. This high-quality product cures overnight with minimal shrinkage, resulting in a soft Shore A15 rubber that exhibits excellent tear resistance and stretches to capture intricate details from various model surfaces.

With its unique properties, the FMC 201 is ideal for applications that require capturing fine details, such as molds for foundry and pattern work, sculpture (lost wax process), and casting various gypsum products and waxes. The rubber is also suitable for use with porous materials like gypsum plasters, concrete, wood, and stone, allowing for a wide range of creative possibilities.

One of the standout features of the FMC 201 is its water-resistant properties, making it an excellent choice for projects that involve water or sulfur-based clays. Unlike polyurethanes, FMC 201 can be poured directly over wet plaster or wet sulfur-based clays, giving creatives more freedom to experiment with different materials and techniques.

Before application, it's essential to seal models made of porous materials with a suitable sealant, such as SuperSeal, to prevent adhesion between the rubber and model surface. Additionally, a release agent is necessary to facilitate demolding when casting into or over most surfaces. Smooth-On's Universal Mold Release is a reliable option for this purpose.

When mixing the FMC 201, it's crucial to stir Parts A and B thoroughly before application, and to follow the recommended mixing ratio to achieve the best results. The mixed compound should be poured as soon as possible to minimize entrapped air and ensure a smooth, even flow.

The FMC 201 can be used in a variety of applications, from mold making and casting to sculpture and art projects. With proper care and storage, molds made with FMC 201 can be reused multiple times, making it a valuable investment for professionals and hobbyists alike.